docs: def get_error_name(error_const):
      """\
      Returns the error name for the provided error constant.
  
      :param int error_const: The error constant (see :py:module:`segno.consts`)
      """
      for name, val in consts.ERROR_MAPPING.items():
          if val == error_const:
              return name
      raise ErrorLevelError('Unknown error level "{0}"'.format(error_const))